There is movement in several OECD countries to add requirements for (1) rotational crop testing on permanent and semi-permanent crops (e.g., orchards, vines, strawberries), and (2) crop/rotational crop accumulation testing over multiple years, which may lead to different approaches of how residues in rotational crops are regulated. The absence of a harmonised approach to MRL setting for rotational crop commodities may create impediments to international trade. Common practices of how to handle inadvertent residues will support work sharing and joint reviews between OECD countries. This presentation will provide an update on OECD RCEG efforts to propose additional detailed guidance on the rotational crop residue studies conducted according to OECD TG 504 (Residues in Rotational Crops) with expanded flexibility in crop commodities to be tested. A tiered approach will be introduced which would ensure that consumers are not exposed to unacceptable residue levels and would support OECD countries in their efforts to harmonize MRLs for inadvertent residues in rotational crops.

OECD Residue Chemistry Expert Group (OECD RCEG): Progress report on recent efforts to prepare a comprehensive guidance document for rotational crops

246th National Meeting (2013)

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